UNIVERSITY OF SOUTH ALABAMA
Today’s Agenda
The Mesozoic Part 2 (week 11 exercises)
GY 112L: Earth History Lab
Lab 11 Preamble
Mesozoic Part 2
Mollusca (Mollusks)
1)
2)
3)
Mollusks (Cephalopods)
Echinoderms
Alabama Stratigraphy (surface rocks)
Mollusca (Mollusks)
Mollusk Facts:
Taxonomy:
Phylum: Mollusca
Class: Amphineura
Bivalvia
Gastropoda
Cephalopoda
Order: Nautiloidea
Ammonoidea
Belemnoidea
Mollusk Facts:
Taxonomy:
Phylum: Mollusca
Class: Cephalopoda
Order: Nautiloidea
Ammonoidea
Belemnoidea
http://www.aquariumofpacific.org/images/olc/nautilusj.baecker_berlin_zoo_aquarium_pd600.jpg
Mollusca (Mollusks)
Mollusca (Mollusks)
Mollusk Facts:
Taxonomy:
Phylum: Mollusca
Class: Cephalopoda
Order: Nautiloidea
Ammonoidea
Belemnoidea
Range:
Nautiloidea (Cambrian-Recent)
Ammonoidea (D-K/T)
Belemnoidea (M-T)
Mollusk Facts:
Taxonomy:
Phylum: Mollusca
Class: Cephalopoda
Range:
Nautiloidea (Cambrian-Recent)
Ammonoidea (D-K/T)
Belemnoidea (M-T)
Mode of Life: Marine, predators
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Mollusca (Mollusks)
Mollusca (Mollusks)
Mollusk Facts:
Mollusk Facts:
Taxonomy:
Phylum: Mollusca
Class: Cephalopoda
Taxonomy:
Phylum: Mollusca
Class: Cephalopoda
Range:
Range:
Nautiloidea (Cambrian-Recent)
Ammonoidea (D-K/T)
Belemnoidea (M-T)
Mode of Life: Marine, predators
Nautiloidea (Cambrian-Recent)
Ammonoidea (D-K/T)
Belemnoidea (M-T)
Mode of Life: Marine, predators
Mineral composition: aragonite
Mineral composition: aragonite
Fossil Pres.: pristine. molds, casts, chalky
http://www.geofossiles.com/image_4667.jpg
www.rubybluejewelry.com
The Mollusk Animal
The Mollusk Animal
Nautiloids/Ammonites
Belemnites
http://www.ucmp.berkeley.edu/images/taxa/inverts/belemnite_anatomy.gif
http://www.tonmo.com/images/content/ammonite-fig7.jpg
Cephalopod Symmetry
Cephalopod Symmetry
http://higheredbcs.wiley.com/legacy/college/levin/0471697435/chap_tut/images/nw0258ann.jpg
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Cephalopod Symmetry
Echinoderms
Mollusk Facts:
Taxonomy:
Phylum: Echinodermata
Echinoderms
Echinoderms
Mollusk Facts:
Mollusk Facts:
Taxonomy:
Phylum: Echinodermata
Class: Crinoidea
Cystoidea
Blastoidea
Echinodea
Asteroidea
Taxonomy:
Phylum: Echinodermata
Class: Crinoidea
Cystoidea
Blastoidea
Echinodea
Asteroidea
Range:
NeoProterozoic-Recent
http://www.ucmp.berkeley.edu/echinodermata/crinoid6.gif
Echinoderms
Echinoderms
Mollusk Facts:
Taxonomy:
Phylum: Echinodermata
Class: Crinoidea
Cystoidea
Blastoidea
Echinodea
Asteroidea
Range:
Range:
NeoProterozoic-Recent
Mode of Life: Marine, scavengers, filter
feeders, predators
http://www.oceanben.com/expeditions/hi0701/Crinoid.jpg
Mollusk Facts:
Taxonomy:
Phylum: Echinodermata
Class: Crinoidea
Cystoidea
Blastoidea
Echinodea
Asteroidea
NeoProterozoic-Recent
Mode of Life: Marine, scavengers, filter
feeders, predators
Mineral composition: calcite
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Echinoderms
The Echinoderm Animals
Mollusk Facts:
Crinoids
Taxonomy:
Phylum: Echinodermata
Class: Crinoidea
Cystoidea
Blastoidea
Echinodea
Asteroidea
Range:
NeoProterozoic-Recent
Mode of Life: Marine, scavengers, filter
feeders, predators
Mineral composition: calcite
Fossil Pres.: pristine +/-Chalky
http://palaeo.gly.bris.ac.uk/Palaeofiles/Fossilgroups/Crinoidea/crinoidreal.jpg
The Echinoderm Animals
The Echinoderm Animals
Blastoids
Sea Stars
http://www.sms.si.edu/irlfieldguide/SeastarBiol.htm
http://grhughes.hughesmordt.com/Artwork/thumbs/CrownThorns.jpg
http://www.indiana.edu/~librcsd/etext/hoosier/image/pa-10.jpg
The Echinoderm Animals
Alabama Stratigraphy and Rock Suites
Sand dollars/Sea Biscuits
Collections of Mesozoic surface rocks from our fair state
http://www.geo.lsa.umich.edu/~kacey/ugrad/3-pht--echB.GIF
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Alabama Stratigraphy and Rocks
Alabama Mesozoic
Subsurface
Stratigraphy
Mesozoic surface rocks
(Cretaceous)
Mesozoic Sedimentation
Mesozoic Sedimentation
Cretaceous
Cretaceous
•Southern rifting in
the Atlantic Ocean
•Southern rifting in
the Atlantic Ocean
•Gulf of Mexico
stops opening
•Gulf of Mexico
stops opening
•AL Coastal Plain
sedimentation
Mesozoic Sedimentation
North
South
Lab Time
Only key formations are labeled
(those discussed in GY 112)
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